40025149 has 4 divisors (see below), whose sum is σ = 40123420. Its totient is φ = 39926880.

The previous prime is 40025147. The next prime is 40025171. The reversal of 40025149 is 94152004.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35105625 + 4919524 = 5925^2 + 2218^2 .

It is a cyclic number.

It is not a de Polignac number, because 40025149 - 2¹ = 40025147 is a prime.

It is a super-3 number, since 3×40025149³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40025147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48522 + ... + 49339.

It is an arithmetic number, because the mean of its divisors is an integer number (10030855).

Almost surely, 2^40025149 is an apocalyptic number.

It is an amenable number.

40025149 is a deficient number, since it is larger than the sum of its proper divisors (98271).

40025149 is an equidigital number, since it uses as much as digits as its factorization.

40025149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98270.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 40025149 is about 6326.5432109486. The cubic root of 40025149 is about 342.0668479614.

The spelling of 40025149 in words is "forty million, twenty-five thousand, one hundred forty-nine".